@idscasper
It depends, on inland grass spots you have grip and gusts so lets say 5/6 knots you're riding, feeling power, grip and if you're lucky you hit a gust and go into the air. But on a clean windy beach it's no fun with 5/6 knots, there the fun starts, for me at 65kg, from about 8/10 knots. But thats working hard so I stay on my local inland spots if the forecast is under 12 knots
@slide, thats so true, but with grass and good tyres you can yank that 10.5 blade pretty quick for his size. In the end it's what you prefer, low-end of the bladeIII 10.5, bladeIV 8.5 & 6.5 are verry close. I have a little hill in a little park and thats where the 10.5 shines